Mizuhara Reito is an ordinary boy who wakes up in a world of 5 billion women and 5 men. Now it's up to him to repopulate the human species. Can he stay loyal to his missing childhood friend when all humankind is counting on him to sleep with as many girls as possible?
spread across the entire 
world in just three months.
in nur drei Monaten explosionsartig
auf der gesamten Welt aus.
se propagó por todo el mundo
en solo tres meses.
se propagó por todo el mundo
en solo tres meses.
s’est propagé dans le monde entier
en l’espace de trois mois,
si è diffuso in tutto il mondo in soli tre mesi.
espalhou-se por todo o mundo
em apenas três meses.
распространился по всему
миру всего за три месяца.